1-7
DIMENSIONS
OVERALL LENGTH (mm.) .............2,035
OVERALL WIDTH (mm.)................800 ( R ) / 760 ( SM )
OVERALL HEIGHT(mm.) ...............1,220
WHEELBASE (mm.).......................1,355
FRAME RSM
FRAME TYPE......................................................................................Multi-tube
FRONT SUSPENSION: TYPE.....................................Marzocchi Conventional hydraulic forks
FRONT SUSPENSION: STROKE / BAR DIAMETER
...........................195 mm. / 41 mm.
FRONT SUSPENSION: FORK BAR OIL CAPACITY
........445 CC SAE 10W.......445 CC SAE 10W
REAR SUSPENSION: TYPE / STROKE .................Single shock absorber progressive /180 mm.
STEERING ANGLE...............................................................26º..............................24,7º
FRONT TYRE: SIZE ........................................................80/90x21”....................100/80x17”
FRONT TYRE: PRESSURE.............................................1.0 to 1.1......................1.7 to 1.8
REAR TYRE: SIZE..........................................................100/80x18”...................130/80x17”
REAR TYRE: PRESSURE ...............................................1.2 to 1.3......................2.0 to 2.1
FRONT BRAKE: TYPE / SIZE: ...............................
Wavy hydr. disc 260 mm. ....Double hydr. disc 240 mm.
REAR BRAKE: TYPE / SIZE....................................
Wavy hydr. disc 218 mm. ..........Hydr. disc 218 mm.
TOTAL CAPACITY, FUEL TANK...........................................................7,0 litres
TOTAL CAPACITY, OIL RESERVOIR ...................................................1,0 litre
COOLING LIQUID CAPACITY .............................................................0,85 litre
ENGINE
OPERATING CYCLE..........................................................................Two stroke
BORE x STROKE............................................................................39.86 x 40 mm.
NUMBER OF CYLINDERS ......................................................................One
TOTAL CUBIC CAPACITY.....................................................................49.9 cc
MAXIM UM POWER ...................................................................8.5 CV a 9,000 rpm
COMPRESSION RATIO ..........................................................................13:1
FUEL ......................................................................................Unleaded petrol 95 octane
ADMISSION SYSTEM .......................................................................Reed valve
STARTER SYSTEM ...........................................................................Kick starter
LUBRICATION SYSTEM......................................................................Oil pump
COOLING SYSTEM .................................................
Liquid-cooled with pump, radiator and thermostat
CARBURETTOR
BRAND / TYPE............................................................................Dell´Orto / PHVA 14
ENGINE IDLE SPEED ......................................................................1,900 ± 100
TURNS IDLE JET AIR SCREW...............................................................2 3/4
DIFFUSER DIAMETER .........................................................................14 mm.
# IDLE JET ...............................................................................................#32
# MAIN JET ..............................................................................................#71
CONICAL NEEDLE: TYPE / STD ADJUSTMENT ................................A11/4th
SLIDE VALVE ...........................................................................................#30
# EMULSIFIER TUBE...........................................................................#211GA
CHOKE TYPE..................................................................................MECHANICAL
# CHOKE JET ..........................................................................................#45
FLOAT ....................................................................................................3.5 gr.
GENERAL TECHNICAL SPECIFICATIONS
DRD MODELS
